“I am a neuroscientist. As a graduate student, after successfully passing my qualifying exam, I celebrated by getting this tattoo. It is the hieroglyphic for the word ‘brain.’ It is the earliest written reference to the brain dating back to the 17th century BC. I am convinced that the brain is the greatest mystery in the universe! “–Jason Trageser
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Originally published February 17, 2008. Copyright 2008 Carl Zimmer.